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https://www.readbyqxmd.com/read/29148924/influence-of-gestational-diabetes-on-the-activity-of-%C3%AE-aminolevulinate-dehydratase-and-oxidative-stress-biomarkers
#1
Fabiane Rodrigues, Leidiane de Lucca, Walter S Neme, Thissiane de Lima Gonçalves
OBJECTIVES: This study aimed to evaluate the activity of delta-aminolevulinate dehydratase (δ-ALA-D) and oxidative stress biomarkers in pregnant women with gestational diabetes mellitus (GDM), in order to demonstrate the involvement of oxidative stress in this condition, which presents pathophysiology still undetermined. METHODS: δ-ALA-D activity, lipid peroxidation estimated as the levels of thiobarbituric acid reactive substances (TBARS), protein (P-SH) and non-protein thiol (NP-SH) content, catalase (CAT) activity and concentration of vitamin C (VIT C) in samples of pregnant women with GDM (n = 48) and in healthy pregnant women (n = 30), who constituted the control group...
November 17, 2017: Redox Report: Communications in Free Radical Research
https://www.readbyqxmd.com/read/29146180/chlorogenic-acid-attenuates-diabetic-retinopathy-by-reducing-vegf-expression-and-inhibiting-vegf-mediated-retinal-neoangiogenesis
#2
Xiyu Mei, Lingyu Zhou, Tianyu Zhang, Bin Lu, Yuchen Sheng, Lili Ji
Diabetic retinopathy (DR) is one of the most common and serious complications of diabetes mellitus (DM). This study aims to investigate the amelioration of chlorogenic acid (CGA) on proliferative DR (PDR) via focusing on inhibiting retinal neoangiogenesis. CGA reduced the increased cell proliferation, migration and tube formation induced by vascular endothelial growth factor (VEGF) in human retinal endothelial cells (HREC) and choroid-retinal endothelial RF/6A cells. CGA abrogated VEGF-induced the phosphorylation of VEGFR2 and its downstream mitogen-activated extracellular regulated kinase (MEK1/2), extracellular regulated protein kinase (ERK1/2) and p38 kinase...
November 13, 2017: Vascular Pharmacology
https://www.readbyqxmd.com/read/29145540/inverse-association-of-peripheral-orexin-a-with-insulin-resistance-in-type-2-diabetes-mellitus-a-randomized-clinical-trial
#3
Mitra Zarifkar, Sina Noshad, Mona Shahriari, Mohsen Afarideh, Elias Khajeh, Zahra Karimi, Alireza Ghajar, Alireza Esteghamati
AIMS: To investigate the association between serum orexin concentrations and insulin resistance/sensitivity in a sample of patients with type 2 diabetes mellitus, and to study the effects of anti-hyperglycemic treatment on orexin concentrations over three months. METHODS: This study was designed as a randomized, open-label, clinical trial. Before allocation, sixty medication-naïve, newly-diagnosed, type 2 diabetes patients underwent a 75 g oral glucose tolerance test (OGTT)...
July 2017: Review of Diabetic Studies: RDS
https://www.readbyqxmd.com/read/29141886/pd-l1-genetic-overexpression-or-pharmacological-restoration-in-hematopoietic-stem-and-progenitor-cells-reverses-autoimmune-diabetes
#4
Moufida Ben Nasr, Sara Tezza, Francesca D'Addio, Chiara Mameli, Vera Usuelli, Anna Maestroni, Domenico Corradi, Silvana Belletti, Luca Albarello, Gabriella Becchi, Gian Paolo Fadini, Christian Schuetz, James Markmann, Clive Wasserfall, Leonard Zon, Gian Vincenzo Zuccotti, Paolo Fiorina
Immunologically based clinical trials performed thus far have failed to cure type 1 diabetes (T1D), in part because these approaches were nonspecific. Because the disease is driven by autoreactive CD4 T cells, which destroy β cells, transplantation of hematopoietic stem and progenitor cells (HSPCs) has been recently offered as a therapy for T1D. Our transcriptomic profiling of HSPCs revealed that these cells are deficient in programmed death ligand 1 (PD-L1), an important immune checkpoint, in the T1D nonobese diabetic (NOD) mouse model...
November 15, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/29138836/gata4-protects-against-hyperglycemia%C3%A2-induced-endothelial-dysfunction-by-regulating-nox4-transcription
#5
Hongfei Xu, Zhen Wang, Zewei Sun, Yiming Ni, Liangrong Zheng
Endothelial dysfunction is one of the most common complications associated with diabetes and may lead to atherosclerosis. Conflicting reports indicate that NADPH oxidase 4 (NOX4) induces hydrogen peroxide production and cytotoxicity, but also has a protective effect on endothelial dysfunction. The present study aimed to identify the transcription factor responsible for NOX4 expression using a transcription factor activation profiling plate array and chromatin immunoprecipitation. Data from these analyses indicated that GATA‑binding protein 4 (GATA4) was able to mediate NOX4 transcription and is downregulated in human umbilical vein endothelial cells (HUVECs) that were exposed to hyperglycemic conditions as well as in the endothelial cells of a mouse diabetes model...
November 14, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29138625/production-and-its-anti-hyperglycemic-effects-of-%C3%AE-aminobutyric-acid-from-the-wild-yeast-strain-pichia-silvicola-ul6-1-and-sporobolomyces-carnicolor-402-jb-1
#6
Sang-Min Han, Jong-Soo Lee
This study was done to produce γ-aminobutyric acid (GABA) from wild yeast as well as investigate its anti-hyperglycemic effects. Among ten GABA-producing yeast strains, Pichia silvicola UL6-1 and Sporobolomyces carnicolor 402-JB-1 produced high GABA concentration of 134.4 µg/mL and 179.2 µg/mL, respectively. P. silvicola UL6-1 showed a maximum GABA yield of 136.5 µg/mL and 200.8 µg/mL from S. carnicolor 402-JB-1 when they were cultured for 30 hr at 30℃ in yeast extract-peptone-dextrose medium. The cell-free extract from P...
September 2017: Mycobiology
https://www.readbyqxmd.com/read/29138226/insulin-secretory-effect-of-sitagliptin-assessment-with-a-hyperglycemic-clamp-combined-with-a-meal-challenge
#7
Sudha S Shankar, R Ravi Shankar, Lori A Mixson, Deborah L Miller, Helmut O Steinberg, Chan R Beals, David E Kelley
Sitagliptin,a dipeptidylpeptidase-IVinhibitor(DPP-4),sustains activity of the incretin hormones GLP-1andGIP and improves hyperglycemia inT2DM.It has however proven challenging to quantify the effect of sitagliptin on rates of insulin secretion(ISR) during a prandial challenge.The tight feedback governance ofISR by plasma glucose means that in the face of treatment-related lowering of postprandialglycemia,corresponding stimulation ofISR is lessened.We postulated that sustaining a stable level of moderate hyperglycemia prior to and during a mealchallenge(MC)would be a platform that enables greater clarity to assess the effect ofsitagliptin onISR and an approach that could be valuable to evaluate novel targets that increase insulin secretion directly and by augmenting incretins...
November 14, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29138225/androgen-signaling-expands-%C3%AE-cell-mass-in-male-rats-and-%C3%AE-cell-androgen-receptor-is-degraded-under-high-glucose-conditions
#8
Naoki Harada, Yasuhiro Yoda, Yusuke Yotsumoto, Tatsuya Masuda, Yuji Takahashi, Takahiro Katsuki, Kenji Kai, Nobuaki Shiraki, Hiroshi Inui, Ryoichi Yamaji
A deficient pancreatic β-cell mass increases the risk of type 2 diabetes mellitus. Here, we investigated the effects of testosterone on the development of pancreatic β-cell mass in male rats. The β-cell mass of male rats castrated at 6 weeks of age was reduced to ~30% of that of control rats at 16 weeks of age, and castration caused glucose intolerance. Loss of β-cell mass occurred due to decreases in islet density/pancreas and β-cell cluster size. Castration was negatively associated with the number of Ki67-positive β-cells and positively associated with the number of TUNEL-positive β-cells...
November 14, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29137090/diabetic-and-sympathetic-influences-on-the-water-permeability-barrier-function-of-human-skin-as-measured-using-transepidermal-water-loss-a-case-control-study
#9
Seung Hoon Han, Ji Woong Park
The presence of long-standing hyperglycemic conditions has been suggested to lead to many skin problems associated with an impaired skin barrier function. However, the relationship between impaired skin barrier status and altered peripheral nervous system function has not yet been determined. The purpose of this study was to investigate the water evaporation rate as a measure of the permeability barrier function of diabetic skin and its relationship to diabetic sensorimotor polyneuropathy (DSPN) and peripheral autonomic neuropathy (PAN) using well-controlled confounding variables...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29137086/chorea-associated-with-nonketotic-hyperglycemia-a-case-report-with-atypical-imaging-changes
#10
Xianchao Chang, Wenke Hong, Hu Yu, Yindan Yao
INTRODUCTION: This is a unique case of nonketotic hyperglycemic (NKH) chorea in 84-year-old Asian woman. The patient had a history of type 2 diabetes mellitus more than 30 years, but had a poor control of blood sugar. She complained of acute onset of bilateral limb involuntary activities, and being easy to fall within a week. Laboratory testing disclosed hyperglycemia (669 mg/dL), glycated hemoglobin (14%), and normal ketones. The brain computed tomography scan and magnetic resonance imaging did not disclose any abnormality in the basal ganglion unlike most cases...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29136764/cardiac-apoptosis-induced-under-high-glucose-condition-involves-activation-of-igf2r-signaling-in-h9c2-cardiomyoblasts-and-streptozotocin-induced-diabetic-rat-hearts
#11
Chih-Chung Feng, Sudhir Pandey, Ching-Yuang Lin, Chia-Yao Shen, Ruey-Lin Chang, Tung-Ti Chang, Ray-Jade Chen, Vijaya Padma Viswanadha, Yueh-Min Lin, Chih-Yang Huang
The insulin-like growth factor type 2 receptor (IGF2R) overexpression has been implicated in heart disease progression. Unregulated IGF2R signaling triggers cardiac hypertrophy, apoptosis, and cardiomyopathies. The present study investigated the role of IGF2R in cardiomyocyte apoptosis under high glucose (HG) levels and in streptozotocin (STZ) induced diabetic rat hearts. We found that IGF2 and IGF2R protein expression were highly upregulated under high glucose condition in H9c2 cells as well as in STZ induced diabetic rat hearts...
November 6, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29135618/pathway-for-the-management-of-hyperglycemia-in-the-cardiac-care-unit
#12
Seyed Hamed Hosseini Dehkordi, Jeanine Albu, Emad F Aziz, Eyal Herzog
Inpatient hyperglycemia has been associated with increased morbidity and mortality in critically ill patients. Optimal control of blood glucose (BG) levels using insulin infusion protocols has been shown to improve clinical outcomes. Protocols have been developed to prescribe a safe and effective rate of insulin infusion for optimal control of BG levels; however, a major obstacle in their implementation is their complexity. We have revised and updated our previously published pathway for the management of hyperglycemia, which introduces the "wheel" concept for insulin dosing...
December 2017: Critical Pathways in Cardiology
https://www.readbyqxmd.com/read/29134973/effect-of-cortisol-on-plasma-lactate-levels-following-cortisolinduced-hyperglycaemia-in-common-african-toad-bufo-regularis
#13
G O Isehunwa, O T Oladun, J E Akpan, A R A Alada
Previous studies in man have shown that cortisol induces hyperglycemia through gluconeogenesis. However,the metabolic substrates involved in cortisol-induced hyperglycemia and the role of adrenergic receptors in lactate productionin toads have not been well studied. This study investigated the effects of adrenergic receptor blockers in cortisol-inducedhyperglycemia and blood lactate levels in the common African toad (Bufo regularis). Each toad was fasted and anaesthetizedwith sodium thiopentone given intraperitoneally (50mg/kg/i...
June 30, 2017: Nigerian Journal of Physiological Sciences: Official Publication of the Physiological Society of Nigeria
https://www.readbyqxmd.com/read/29132827/high-performance-thin-layer-chromatographic-methods-in-the-evaluation-of-the-antioxidant-and-anti-hyperglycemic-activity-of-myrmecodia-platytyrea-as-a-promising-opportunity-in-diabetes-treatment
#14
S Agatonovic-Kustrin, D W Morton, A Adam, H H Mizaton, H Zakaria
The steady increase of diabetes is becoming a major burden on health care systems. As diabetic complications arise from oxidative stress, an antioxidant therapy along with anti-diabetic drugs is recommended. Myrmecodia or ant plant is highly valued as a traditional medicine in West Papua. It is used as an alternative treatment for diabetes, as the substances produced by ants can reduce blood sugar levels. The aim of this study was to develop and establish high-performance thin-layer chromatographic (HPTLC)-bioautographic methods to measure the antioxidant and hypoglycemic effects in different extracts from Myrmecodia platytyrea and to compare them with sterol content...
November 10, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/29130725/-eighth-jes%C3%A3%C2%BAs-culebras-lecture-critical-care-nutrition-and-hyperglycemia-a-close-relationship
#15
Alfonso Mesejo
Critically ill patients show a metabolic response to injury that affects carbohydrate metabolism, causing hyperglycemia and an increase in glycemic variability that makes the critically ill patient susceptible to infection, resulting in morbidity and mortality increase. Also, severe hypoglycemia was detected as a consequence of intensive insulin treatment that provokes deleterious effects in their clinical evolution, so a correct monitoring of plasma glucose would contribute to reduce morbidity and mortality...
October 24, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/29130662/-the-role-of-bone-morphogenic-protein-4-in-the-progression-of-vein-graft-hyperplastic-remodeling-under-hyperglycemic-condition
#16
Deng-Feng Fang, Hong-Wei Zhang, Jun Gu, Kang-Jun Fan, Huai-Min Liang, Jia-Yu Shen, Er-Yong Zhang, Jia Hu
OBJECTIVE: This study was designed to assess the vessel wall characteristics and the expression levels of bone morphogenic protein4(BMP4) and proliferating cell antigen Ki67 in vein grafts harvested from diabetic rats,and to investigate the role of BMP4 in progression of vein graft hyperplastic remodeling under hyperglycemic condition. METHODS: 48 male SpragueDawky rats [body mass (194±16) g] aged 8 weeks were randomly divided into diabetes mellitus (DM) group ( n=24) and nondiabetes mellitus (NDM) group ( n=24)...
September 2017: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/29129054/the-mulberry-morus-alba-l-fruit-a-review-of-characteristic-components-and-health-benefits
#17
Qingxia Yuan, Longyan Zhao
Mulberry (Morus alba L.) fruit has a high yield in one fruiting season in many countries, especially in Asia, and a long history of use as an edible fruit and traditional medicine. A great diversity of nutritive compounds such as fatty acids, amino acids, vitamins, minerals and bioactive compounds, including anthocyanins, rutin, quercetin, chlorogenic acid, and polysaccharides have been found in mulberry fruit depending on the cultivars and maturity stages. Furthermore, the extracts and active components of mulberry fruit have demonstrated numerous biological activities, including anti-oxidant, neuroprotective, anti-atherosclerosis, immunomodulative, anti-tumor, anti-hyperglycemic, hypolipidemic activities in vitro and in vivo studies, and received increasing interest from researchers and pharmaceutical companies...
November 13, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29128638/ulk1-regulated-autophagy-a-mechanism-in-cellular-protection-for-aldh2-against-hyperglycemia
#18
Min Liu, Songhe Lu, Wei He, Le Zhang, Ying Ma, Ping Lv, Meijuan Ma, Wenjun Yu, Jiaxing Wang, Mingming Zhang, Yingmei Zhang, Yan Li
Mitochondrial aldehyde dehydrogenase 2 (ALDH2), an important enzyme in the elimination of toxic aldehydes, is involved in cardioprotection against diabetes mellitus. This study was designed to examine the mechanism behind ALDH2-offered protection against high glucose exposure with a focus on autophagy. H9C2 cells were cultured with normal or high glucose medium in the presence or absence of the ALDH2 agonist Alda-1. GFP-LC3 puncta and immunofluorescence were employed to assess autophagosome formation. Western blotting was applied to evaluate autophagy protein markers Atg5, LC3, p62, ULK1 phosphorylation and ALDH2...
November 8, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/29127736/liver-x-receptor-activation-inhibits-sglt2-mediated-glucose-transport-in-human-renal-proximal-tubular-cells
#19
Pattira Chonlaket, Teerasak Wongwan, Sunhapas Soodvilai
Liver X receptors (LXRs) are members of a nuclear receptor family consisting of two isoforms, LXR-α and LXR-β. They play a major role in energy metabolism including lipid and glucose metabolism. Recent studies reported LXRs regulate plasma glucose although the mechanism is still uncertain. The present study investigated whether LXR activation regulates sodium glucose cotransporter2 (SGLT2) in human renal proximal tubular cells. LXR agonists, T0901317 and GW3965, inhibited SGLT2-mediated glucose uptake in concentration-dependent manners...
November 11, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/29122890/microrna-30c-reduces-plasma-cholesterol-in-homozygous-familial-hypercholesterolemic-and-type-2-diabetic-mouse-models
#20
Sara Irani, Jahangir Iqbal, W James Antoni, Laraib Ijaz, M Mahmood Hussain
High plasma cholesterol levels are found in several metabolic disorders and their reductions are advocated to reduce risk of atherosclerosis. A way to lower plasma lipids is to curtail lipoprotein production; however, this is associated with steatosis. We previously showed that microRNA-30c (miR-30c) lowers diet-induced hypercholesterolemia and atherosclerosis in C57BL/6J and Apoe-/- mice. Here, we tested miR-30c effect on plasma lipids, transaminases and hepatic lipids in different mouse models. Hepatic delivery of miR-30c to chow fed leptin deficient (ob/ob) and leptin receptor deficient (db/db) hypercholesterolemic and hyperglycemic mice reduced cholesterol in total plasma and VLDL/LDL by ~28% and ~25%, respectively, without affecting triglyceride and glucose levels...
November 9, 2017: Journal of Lipid Research
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